Example With JdbcDaoSupport

By extended the JdbcDaoSupport, set the datasource and JdbcTemplate in your class is no longer required, you just need to inject the correct datasource into JdbcCustomerDAO. And you can get the JdbcTemplate by using a getJdbcTemplate() method.

public class JdbcCustomerDAO extends JdbcDaoSupport implements CustomerDAO
{
   //no need to set datasource here
   public void insert(Customer customer){

    String sql = "INSERT INTO CUSTOMER " +
        "(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";

    getJdbcTemplate().update(sql, new Object[] { customer.getCustId(),
            customer.getName(),customer.getAge()
    });

}

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

    <bean id="dataSource"
         class="org.springframework.jdbc.datasource.DriverManagerDataSource">

        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3306/mkyongjava" />
        <property name="username" value="root" />
        <property name="password" value="password" />
    </bean>

</beans>

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

    <bean id="customerDAO" class="com.mkyong.customer.dao.impl.JdbcCustomerDAO">
        <property name="dataSource" ref="dataSource" />
    </bean>

</beans>